Add text on order confirmation page

Hello,

using opencart 1.5.6.4. How can I add text on order confirmation page at the bottom?
My theme contains these folders:
catalog/view/theme/mytheme/template/common
catalog/view/theme/mytheme/template/module
catalog/view/theme/mytheme/template/product

Tried to find confirm.php or success.php but these files aren't in folder.

Thank you for ideas.

You could find a way to add it in the language file catalog/language/english/checkout/checkout.php, or in the tpl catalog/view/theme/yourtheme/template/checkout/confirm.tpl , if confirm.tpl is not in your theme its because it doesnt get altered by the theme so its not needed, youll find it in the default theme (any tpl gets ladd from default theme if its not in active theme).

Thank you, works fine